एपीए उद्धरण

Udayabhanu A.P. (1998). Parichinthanangal, Parichayangal. Sahithya Pravarthaka Sahakarana Sankham, Kottayam.

शिकागो स्टाइल उद्धरण

Udayabhanu A.P. Parichinthanangal, Parichayangal. Sahithya Pravarthaka Sahakarana Sankham, Kottayam: Sahithya Pravarthaka Sahakarana Sankham, Kottayam, 1998.

एमएलए उद्धरण

Udayabhanu A.P. Parichinthanangal, Parichayangal. Sahithya Pravarthaka Sahakarana Sankham, Kottayam, 1998.